I wennt to both websites, and couldn't find any differences in the pics...that doesn't necessarily mean that there aren't any; I just can't spot them. My original source was as follows:
www.shorey.net/.../Beetle/htmltree/htmlShorey describes the car as a 1953 Rometsch Beetle taxi, so I did, too. If there was any collaboration between Messerschmidt and Rometsch, that may account for the confusion...I wasn't trying to trick anyone. I diodn't see anything different on the roofs of the cars, but I'm not wide awake yet...I've also seen this car described as a 1951 AND 1953 model!
To avoid any confusion, I'll just award double points...
Dan